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Why 3WL air circuit breakers?

Reliable, versatile and fully integrated: Every power source needs a reliable power supply. The 3WL air circuit breaker reliably protects electrical installations from damage or fire caused by short circuits, ground faults or overload faults.

The 3WL air circuit breaker can disconnect and protect motors, capacitors, generators, transformers, busbars and cables. In electrical systems used in industrial, building and infrastructure applications, it can be used as an incoming line, bus tie and feeder circuit breaker. It also features communication capabilities, allowing for easy integration into higher-level control and energy management systems.

Key benefits

Adapt to various applications

Featuring a modular design and standardized accessories, this circuit breaker can flexibly adapt to different application requirements. A globally compatible version compliant with UL 489 is available.

Easily implement functions

Easily implement protection, measurement and communication functions, such as rated current inserts that allow for rapid adjustment of the rated current. Expandable locking devices or mechanisms prevent accidental tripping.

Integrate with other systems

When equipped with a communication module and integrated into a higher-level energy management system, auxiliary, signal and position contacts report system status and fault diagnosis to the control system, even remotely.

Featured capabilities